Sometimes I Feel Shy: Tundra Friends series

In this book, part of the Tundra Friends series, two friends Aqi and Uka decide to watch a movie after school. But when Sissi joins them, Aqi feels nervous—she is sometimes shy around new people. Uka keeps asking Aqi if she is okay, which starts to make her upset. Uka supports Aqi to make her feel more comfortable. Aqi helps Uka understand that she is shy sometimes, and that’s okay.